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DESCRIPTIVE TERMINOLOGY & SOIL CLASSIFICATION <br />LABORATORY/FIELD TESTING DEFINITIONS FOR <br />CONSISTENCY OF COHESIVE SOILS <br />EXPLORATION LOGS <br />CONSISTENCY <br />STP (BPF) <br />----- PP (TSF) <br />DD = <br />DRY DENSITY (PCF) <br />VERY SOFT <br />0-1 <br />LESS THAN 0.25 <br />-- <br />SOFT <br />-_- <br />2 - 4 <br />---------- <br />0 25 0.5 <br />WD = <br />WET DENSITY (PCF) <br />MEDIUM STIFF <br />5-8 <br />0.5 - 1.0 <br />MC = <br />MOISTURE CONTENT (%) <br />STIFF <br />9 - 15 <br />1 0 - 2.0 <br />PL = <br />PLASTIC LIMIT (%) <br />VERY STIFF <br />16 30 <br />2 0 4 0 <br />HARD <br />30+ <br />OVER 4.0 <br />LL = <br />LIQUID LIMIT <br />_ _'- <br />_._.___._ ..._ - __ <br />.-. - -_ <br />PI = <br />PLASTICITY INDEX <br />RELATIVE DENSITY OF COHESIONLESS <br />SOILS <br />OC = <br />ORGANIC CONTENT (%) <br />DENSITY <br />SPT (BPF) <br />VERY LOOSE <br />0-4 <br />S = <br />SATURATION PERCENT (%) <br />LOOSE <br />5 -10 <br />SG = <br />SPECIFIC GRAVITY <br />---- -- <br />- <br />-- --- ------- <br />MEDIUM DENSE <br />11 -30 <br />C = <br />COHESION <br />- - -- <br />DENSE <br />31-50 <br />m - <br />ANGLE OF INTERNAL FRICTION <br />VERY DENSE <br />50+ <br />QU <br />= UNCONFINED COMPRESSION <br />STRENGTH <br />PARTICLE SIZE IDENTIFICATION <br />#200 = <br />PERCENT PASSING THE #200 SIEVE <br />-,- <br />NAME <br />DIAMETER <br />SIEVE NO. <br />CBR = <br />CALIFORNIA BEARING RATIO <br />(INCHES) <br />VS = <br />VANE SHEAR <br />ROCK BLOCK <br />>120 <br />- -- -- <br />BOULDER <br />12-120 <br />-- <br />PP <br />= POCKET PENETROMETER <br />- - <br />---- <br />- - ---------- <br />COBBLE <br />3-12 <br />DP = <br />DRIVE PROBE <br />------------------------ <br />GRAVEL <br />COURSE <br />_-__ _. -_------ <br />I__ . _- <br />3/4 3 <br />--- <br />- _ __ . <br />" SPT = <br />STANDARD PENETRATION TEST <br />BPF = <br />BLOWS PER FOOT (N VALUE) <br />SH = <br />SHELBY TUBE SAMPLE <br />GW = <br />GROUND WATER <br />RQD = <br />ROCK QUALITY DESIDNATION <br />TP = <br />TEST PIT <br />B = <br />BORING <br />HA = <br />HAND AUGER <br />Q <br />GROUNDWATER LEVEUSEEPAGE <br />ENCOUNTERED DURING EXPLORATION <br />y <br />STATIC GROUNDWATER LEVEL WITH <br />DATE MEASURED <br />FINE <br />1/4-3/4 NO.4 <br />_------------------------------ <br />SAND <br />»__ _ �- __ --- <br />COARSE <br />4.75 MM NO. 10 <br />MEDIUM <br />2.OMM N0%.40 <br />FINE <br />.425 MM NO. 200 <br />_-._.__-- __._ ----- <br />SILT <br />_ ... --------- <br />.075 MM <br />CLAY <br /><0.005 MM <br />------------ <br />GRAIN SIZE <br />FINE <br /><0.04 INCH FEW GRAINS ARE <br />GRAINED <br />DISTINGUISHABLE IN THE <br />FIELD OR WITH HAND LENS. <br />MEDIUM <br />0.04-0.2 11 IN :; GRAINS ARE <br />GRAINED <br />DISTINGUISHABLE WITH THE <br />AID OF A HAND LENS. <br />COARSE <br />0.04-0.2 INCH MOST GRAINS ARE <br />GRAINED <br />DISTINGUISHABLE WITH THE <br />NAKED EYE. <br />